<template>
  <div class="header">
    <div class="nav-topbar">
      <div class="container">
        <div class="topbar-menu">
          <a href="javascript:;">小米商城</a>
          <a href="javascript:;">MUI</a>
          <a href="javascript:;">云服务</a>
          <a href="javascript:;">协议规则</a>
        </div>
        <div class="topbar-user">
          <a href="javascript:;" v-if="username">{{ username }}</a>
          <router-link to="/login" tag="a" v-if="!username">登录</router-link>
          <a href="javascript:;" v-if="username" @click="logout">退出</a>
          <a href="javascript:;" v-if="username" @click="goOrderList">我的订单</a>
          <a class="my-cart" href="javascript:;" @click="gotoCart">
            <span class="icon-cart"></span> 购物车({{ cartcount }})
          </a>
        </div>
      </div>
    </div>
    <div class="nav-header">
      <div class="container">
        <div class="header-logo">
          <a href="/#/index"></a>
        </div>
        <div class="header-menu">
          <div class="item-menu">
            <span>小米手机</span>
            <div class="children">
              <ul>
                <li
                  class="proudct"
                  v-for="(item, index) in phoneList"
                  :key="index"
                >
                  <a :href="'/#/product/' + item.id" target="_blank">
                    <div class="pro-img">
                      <img v-lazy="item.mainImage" alt="" />
                    </div>
                    <div class="pro-name">{{ item.name }}</div>
                    <div class="pro-price">{{ item.price | currency }}</div>
                  </a>
                </li>
              </ul>
            </div>
          </div>
          <div class="item-menu">
            <span>RedMi红米</span>
          </div>
          <div class="item-menu">
            <span>电视</span>
            <div class="children">
              <ul>
                <li class="proudct">
                  <a href="" target="_blank">
                    <div class="pro-img">
                      <img src="/imgs/nav-img/nav-3-1.jpg" alt="" />
                    </div>
                    <div class="pro-name">小米壁画电视</div>
                    <div class="pro-price">￥6999.00元</div>
                  </a>
                </li>
                <li class="proudct">
                  <a href="" target="_blank">
                    <div class="pro-img">
                      <img src="/imgs/nav-img/nav-3-2.jpg" alt="" />
                    </div>
                    <div class="pro-name">小米全面屏电视E55A</div>
                    <div class="pro-price">￥1799.00元</div>
                  </a>
                </li>
                <li class="proudct">
                  <a href="" target="_blank">
                    <div class="pro-img">
                      <img src="/imgs/nav-img/nav-3-3.png" alt="" />
                    </div>
                    <div class="pro-name">小米电视4A 32英寸</div>
                    <div class="pro-price">￥699.00元</div>
                  </a>
                </li>
                <li class="proudct">
                  <a href="" target="_blank">
                    <div class="pro-img">
                      <img src="/imgs/nav-img/nav-3-4.jpg" alt="" />
                    </div>
                    <div class="pro-name">小米电视4A 55英寸</div>
                    <div class="pro-price">￥1799.00元</div>
                  </a>
                </li>
                <li class="proudct">
                  <a href="" target="_blank">
                    <div class="pro-img">
                      <img src="/imgs/nav-img/nav-3-5.jpg" alt="" />
                    </div>
                    <div class="pro-name">查看全部</div>
                    <div class="pro-price">查看全部</div>
                  </a>
                </li>
                <li class="proudct">
                  <a href="" target="_blank">
                    <div class="pro-img">
                      <img src="/imgs/nav-img/nav-3-6.png" alt="" />
                    </div>
                    <div class="pro-name">小米壁画电视</div>
                    <div class="pro-price">￥6999.00元</div>
                  </a>
                </li>
              </ul>
            </div>
          </div>
        </div>
        <div class="header-search">
          <div class="wraaper">
            <input type="text" />
            <a href="javascript:;"></a>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  name: "nav-header",
  data() {
    return {
      phoneList: [],
    };
  },
  computed: {
    // 直接当做普通属性调用不加括号
    // 任何data中数据变化立即重新计算
    // 计算属性会缓存
    username() {
      return this.$store.state.username;
    },
    cartcount() {
      return this.$store.state.cartcount;
    },
    // 因为数据请求的时间问题,和时间差,当dom被渲染的时候,没有请求到数据,如果不用computed就不会输出自己请求到的数据
  },
  mounted() {
    this.getProductList();
    let params=this.$route.params
    if(params && params.from=='login'){
      this.getCartCount()
    }
  },
  filters: {
    currency(val) {
      if (!val) return 0.0;
      return "￥" + val.toFixed(2) + "元";
      // toFixed保留俩位小数
    },
  },
  methods: {
    getProductList() {
      this.axios
        .get("/products", {
          params: {
            categoryId: "100012",
            pageSize: 6,
          },
        })
        .then((res) => {
          // if (res.list.length> 6) {
          //    因为接口代理和main.js 中的接口拦截直接取到最内层的data数据
          //   this.phoneList = res.list.scice(0,6);
          //     当长度大于六的实话截取六条数据
          // }
          this.phoneList = res.list;
        });
    },
    getCartCount(){
      this.axios.get('/carts/products/sum').then((res=0)=>{
        this.$store.dispatch('saveCartCount',res);
      })
    },
    logout() {
      this.axios.post("/user/logout").then(() => {
        this.$message({
          message: "退出成功",
          type: "success",
        });
        this.$cookie.set("userId",'',{ expires: "-1" });
        this.$store.dispatch("saveUserName", '');
        this.$store.dispatch('saveCartCount','0')
      });
    },
    gotoCart() {
      this.$router.push("/cart");
    },
    goOrderList(){
      this.$router.push("/order/list");
    }
  },
};
</script>

<style lang="scss" scoped>
@import "../assets/scss/base.scss";
@import "../assets/scss/mixin.scss";
@import "../assets/scss/config.scss";

.header {
  .nav-topbar {
    background-color: #333;
    height: 39px;
    line-height: 39px;
    .container {
      width: 1226px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      a {
        color: #b0b0b0;
        display: inline-block;
        margin-right: 17px;
      }
      .my-cart {
        width: 110px;
        background-color: #ff6600;
        color: #fff;
        text-align: center;
        .icon-cart {
          @include bgImg(16px, 12px, "/imgs/icon-cart-checked.png");
          margin-right: 4px;
        }
      }
    }
  }
  .nav-header {
    .container {
      height: 112px;
      position: relative;
      @include flex();

      .header-menu {
        display: inline-block;
        padding-left: 209px;
        width: 643px;
        .item-menu {
          display: inline-block;
          color: #333;
          font-weight: bold;
          font-size: 16px;
          line-height: 112px;
          margin-right: 20px;
          span {
            cursor: pointer;
          }
          &:hover {
            color: $colorA;
            .children {
              height: 220px;
              opacity: 1;
            }
          }
          .children {
            position: absolute;
            top: 112px;
            left: 0;
            width: 1226px;
            overflow: hidden;
            height: 0;
            opacity: 0;
            transition: all 0.5s;
            border-top: 1px solid #e5e5e5;
            box-shadow: 0px 7px 6px 0px rgba(0, 0, 0, 0.11);
            z-index: 11;
            background-color: #fff;
            .proudct {
              position: relative;
              float: left;
              width: 16.66%;
              height: 220px;
              font-size: $fontK;
              line-height: 12px;
              display: flex;
              flex-direction: column;
              justify-content: center;
              align-items: center;

              a {
                display: inline-block;
                cursor: pointer;
              }
              img {
                height: 111px;
                width: auto;
                margin-top: 26px;
              }
              .pro-img {
                height: 137px;
              }
              .pro-name {
                font-weight: bold;
                margin-top: 19px;
                margin-bottom: 8px;
                color: $colorB;
                text-align: center;
              }
              .pro-price {
                text-align: center;
                color: $colorA;
              }
              &::before {
                content: "";
                position: absolute;
                top: 50px;
                right: 0;
                border-left: 1px solid $colorF;
                height: 100px;
                width: 1px;
                display: inline-block;
              }
              &:last-child::before {
                display: none;
              }
            }
          }
        }
      }
      .header-search {
        width: 319px;
        .wraaper {
          height: 50px;
          border: 1px solid #e0e0e0;
          display: flex;
          align-items: center;
          input {
            box-sizing: border-box;
            border: none;
            border-right: 1px solid #e0e0e0;
            width: 264px;
            height: 50px;
            padding-left: 14px;
          }
          a {
            @include bgImg(18px, 18px, "/imgs/icon-search.png");
            margin-left: 17px;
          }
        }
      }
    }
  }
}
</style>
